Metal sheet cutting device

Abstract

The present invention belongs to the technical field of metal sheet processing, specifically a metal sheet cutting device, including a processing table, first support plates are fixed on both sides of the top of the processing table, support frames are fixed on both sides of the processing table, a connecting shell is fixed between the support frames, a first motor is installed on one side of the connecting shell, a first threaded rod is rotatably connected to the inside of the connecting shell, a moving block is slidably connected to the inside of the connecting shell, the moving block and the first threaded rod are threadedly connected, a second motor is arranged below the moving block, a saw blade is installed on the end of the rotating shaft of the second motor, a gap larger than the thickness of the saw blade is provided between the two first support plates, and the saw blade is located above the middle of the gap; the encoder can be rotated to different angles by different heights of the pressing plate being lowered, and the encoder controls the first motor to rotate at different speeds, so that the cutting speed of the saw blade can be changed, and the cutting speed of the saw blade can be controlled according to the thickness of the metal sheet to prevent the saw blade from being stuck in the cutting gap.

Description

Technical Field

[0001] The invention belongs to the technical field of metal plate processing, in particular to a metal plate cutting device. Background Art

[0002] Metal sheets are a type of metal material that is often seen in daily life. Metal sheets can be used in different scenarios depending on their thickness. For example, thinner sheets can be used to make equipment casings. After production, metal sheets will be in a larger size. Before use, they will need to be cut from the larger size to the required size, so a cutting device will be used to cut the metal sheets.

[0003] A Chinese patent with the existing announcement number CN113798576B discloses a metal plate cutting device, including: a bracket, a support ring, a rotating device, a sliding support device, and a rotating device, which can avoid changing the placement position of the plate and save the time required for cutting.

[0004] During use, the above-mentioned technical solution requires a saw blade to cut the metal sheet, but there will be certain differences in the thickness of the cut sheet. Thicker sheets require the saw blade to use a longer time to cut, while thinner sheets require less time to cut. Cutting at the same speed will cause the saw blade to be unable to completely cut the sheet, causing the saw blade to get stuck in the cutting seam of the sheet, affecting the stability of the cutting.

[0005] To this end, the present invention provides a metal sheet cutting device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: a metal sheet cutting device described in the present invention includes a processing table, first support plates are fixed on both sides of the top of the processing table, support frames are fixed on both sides of the processing table, a connecting shell is fixed between the support frames, a first motor is installed on one side of the connecting shell, a first threaded rod is rotatably connected to the inside of the connecting shell, a moving block is slidably connected to the inside of the connecting shell, the moving block is threadedly connected to the first threaded rod, a second motor is arranged below the moving block, a saw blade is installed on the end of the rotating shaft of the second motor, a gap larger than the thickness of the saw blade is provided between the two first support plates, and the saw blade is located above the middle of the gap;

[0008] A second support plate is fixed on both sides of the top of the connecting shell, the top of the second support plate is rotatably connected to a third threaded rod, the external thread of the third threaded rod is connected to a second lifting frame, and a pressing plate is fixed on both sides of the bottom of the second lifting frame, an encoder is installed on the top of one of the second support plates, the rotating shaft of the encoder is connected to the third threaded rod, and one side of the top of the second support plate is rotatably connected to a rotating rod;

[0009] When the rotating rod rotates, it can drive the third threaded rod to rotate to adjust the height of the second lifting frame, and the encoder records the current rotation angle as the third threaded rod rotates.

[0010] Preferably, a worm wheel is fixed to the top of the third threaded rod, the rotating shaft of the encoder is fixedly connected to the top of the worm wheel, a worm is fixed on the outside of the rotating rod near the worm wheel, and the worm is meshingly connected to the worm wheel.

[0011] Preferably, a connecting tube is fixed to the bottom end of the moving block, a lifting rod is slidably connected to the inside of the connecting tube, a connecting block is fixed to the bottom end of the lifting rod, the connecting block is fixed to one side of the second motor, the rotating shaft of the second motor passes through the inside of the connecting block, the inside of the connecting tube is rotatably connected to the second threaded rod, and the bottom end of the second threaded rod is threadedly connected to the lifting rod.

[0012] Preferably, the top end of the second threaded rod is connected to a connecting gear through a ratchet structure, one side of the connecting gear is meshedly connected to a rack, one end of the rack extends from the inside to the outside of the connecting cylinder, and a top plate is fixed to the side of the bottom end of the connecting shell close to the first motor;

[0013] Among them, when the rack extends into the connecting cylinder, the connecting gear is connected to the ratchet teeth of the second threaded rod, and when the rack extends out of the connecting cylinder, the connecting gear is not connected to the ratchet teeth of the second threaded rod.

[0014] Preferably, a first spring is fixed to one end of the rack placed inside the connecting cylinder, and the other end of the first spring is fixedly connected to the connecting cylinder.

[0015] Preferably, a connecting disk is fixed to the end of the rotating shaft of the second motor, a plurality of threaded columns are rotatably connected inside the connecting disk, a fixed disk is provided on a side of the connecting disk away from the connecting block, the threaded columns can be threadedly connected to the inside of the fixed disk, the saw blade is clamped between the connecting disk and the fixed disk, and a rotating wheel is provided below the connecting block;

[0016] When the connecting block descends to a preset height, the rotating wheel drives the multiple threaded columns to rotate, separating the fixing plate from the threaded columns.

[0017] Preferably, a docking gear is fixed to the end of the threaded column near the connecting block, the outside of the multiple docking gears are meshedly connected to a gear ring, the top of the rotating wheel is meshedly connected to a transmission gear, and an output gear is fixed to the end of the transmission gear near the gear ring, and the output gear can be meshed and connected with the outer side of the gear ring. A bracket is fixed to the side of the processing table away from the first motor, a docking plate is fixed to the top of the bracket, a tooth plate is fixed to the inside of the docking plate, and the rotating wheel can be meshed and connected with the tooth plate.

[0018] Preferably, the connecting block is internally movably connected to a first lifting frame, and the first lifting frame is rotationally connected to the transmission gear and the rotating wheel;

[0019] In the initial state, the output gear is separated from the gear ring. When the runner contacts the gear plate, the output gear and the gear ring are meshed and connected.

[0020] Preferably, both sides of the connecting block are slidably connected to a push rack, a sliding column is fixed to one side of the push rack, a guide groove is opened at the top of the first lifting rack, the sliding column is slidably connected to the inside of the guide groove, a third motor is installed at the top of the connecting tube, and the end of the rotating shaft of the third motor is fixedly connected to the second threaded rod.

[0021] Preferably, a telescopic column is inserted into the push frame, a push plate is fixed to one end of the telescopic column away from the push frame, a second spring is sleeved on the outside of the telescopic column, one end of the second spring is fixedly connected to the push plate, and the other end of the second spring is fixedly connected to the push frame.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The metal sheet cutting device described in the present invention can rotate the encoder to different angles by lowering the pressure plate to different heights. The encoder controls the first motor to rotate at different speeds, which can change the cutting speed of the saw blade. The cutting speed of the saw blade can be controlled according to the thickness of the metal sheet to prevent the saw blade from getting stuck in the cutting seam.

[0024] 2. The metal plate cutting device described in the present invention can automatically disassemble the saw blade through the rotating wheel and the tooth plate when the outer diameter of the saw blade is not enough to continue cutting, and automatically lower the saw blade after cutting to compensate for the outer diameter consumed by cutting, thereby achieving stable cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 It is a perspective view of the present invention;

[0027] Figure 2 It is another perspective perspective diagram of the present invention;

[0028] Figure 3 It is a schematic diagram of the lifting frame structure of the present invention;

[0029] Figure 4 It is a schematic diagram of the connection shell structure in the present invention;

[0030] Figure 5 It is a schematic diagram of the saw blade structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the internal structure of the connecting tube in the present invention;

[0032] Figure 7 It is a schematic diagram of the connection block structure in the present invention;

[0033] Figure 8 Schematic diagram of the gear ring structure in the present invention;

[0034] Figure 9 It is a schematic diagram of the lifting frame structure of the present invention;

[0035] Figure 10 It is a schematic diagram of the push frame structure in the present invention;

[0036] Figure 11 It is a structural schematic diagram of the docking plate in the present invention.

[0037] In the figure: 1. Processing table; 11. First support plate; 12. Support frame; 121. Connecting shell; 122. First motor; 123. Moving block; 124. First threaded rod; 125. Top plate; 13. Bracket; 131. Docking plate; 132. Tooth plate; 2. Saw blade; 21. Second motor; 22. Connecting block; 221. Lifting rod; 222. First lifting frame; 223. Rotating wheel; 224. Transmission gear; 225. Output gear; 226. Guide groove; 23. Connecting cylinder; 231. Connecting gear ; 232, rack; 233, first spring; 234, second threaded rod; 235, third motor; 24, connecting disk; 241, fixed disk; 242, threaded column; 243, docking gear; 244, gear ring; 25, push frame; 251, sliding column; 252, telescopic column; 253, second spring; 254, push plate; 3, pressure plate; 31, second lifting frame; 311, second support plate; 312, third threaded rod; 313, worm gear; 314, encoder; 315, worm; 316, rotating rod. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0039] like Figures 1 to 5As shown, a metal sheet cutting device according to an embodiment of the present invention includes a processing table 1, first support plates 11 are fixed on both sides of the top of the processing table 1, support frames 12 are fixed on both sides of the processing table 1, a connecting shell 121 is fixed between the support frames 12, a first motor 122 is installed on one side of the connecting shell 121, a first threaded rod 124 is rotatably connected to the inside of the connecting shell 121, a moving block 123 is slidably connected to the inside of the connecting shell 121, the moving block 123 is threadedly connected to the first threaded rod 124, a second motor 21 is provided below the moving block 123, a saw blade 2 is installed on the end of the rotating shaft of the second motor 21, a gap greater than the thickness of the saw blade 2 is provided between the two first support plates 11, and the saw blade 2 is located above the middle of the gap;

[0040] A second support plate 311 is fixed to both sides of the top of the connecting shell 121. The top of the second support plate 311 is rotatably connected to a third threaded rod 312. The external thread of the third threaded rod 312 is connected to the second lifting frame 31. A pressing plate 3 is fixed to both sides of the bottom of the second lifting frame 31. An encoder 314 is installed on the top of one of the second support plates 311. The rotating shaft of the encoder 314 is connected to the third threaded rod 312. One side of the top of the second support plate 311 is rotatably connected to a rotating rod 316.

[0041] When the rotating rod 316 rotates, it can drive the third threaded rod 312 to rotate and adjust the height of the second lifting frame 31. The encoder 314 records the current rotation angle as the third threaded rod 312 rotates.

[0042] When the metal sheet is produced, it will be in a larger size. When it is used, a cutting device will be used to cut the metal sheet into the required size in order to make the size more suitable. When cutting, the processing table 1 is placed in the processing position, and then the sheet is placed on the top of the two first support plates 11. At this time, the pressing plate 3 is in the highest position. After the sheet is placed, its position is adjusted according to the position of the sheet. At this time, it is necessary to align the sheet cutting line with the center line of the gap between the two first support plates 11, and then shake the turntable at the end of the rotating rod 316. The turntable drives the rotating rod 316 to rotate, and the rotating rod 316 drives the third threaded rod 312 to rotate. At this time, the third threaded rod 312 drives the second lifting frame 31 from the highest point of the second support plate 311 to The second lifting frame 31 drives the pressing plate 3 to move downward. At this time, the pressing plate 3 can be pressed on the top of the metal sheet, and the metal sheet can be fixed on the top of the first supporting plate 11. Then, cutting is carried out. At this time, the second motor 21 is started to drive the saw blade 2 to rotate at high speed. Then, the first motor 122 is started to drive the first threaded rod 124 to rotate. The rotation of the first threaded rod 124 drives the moving block 123 to slide inside the connecting shell 121. At this time, the moving block 123 can drive the second motor 21 and the saw blade 2 to move inside the gap of the first supporting plate 11. During the movement, the saw blade 2 cuts the metal sheet. When the moving block 123 moves from one end to the other end inside the connecting shell 121, the saw blade 2 can complete the cutting of one sheet.

[0043] During the cutting process, there will be certain differences in the thickness of plates for different purposes. The thicker plates have a larger cross-sectional area, so the time required for cutting is also longer. When the rotating rod 316 is shaken to drive the second lifting frame 31 to descend, the distance that the second lifting frame 31 needs to descend for plates of different thicknesses is also different. When the thickness of the plate is larger, the distance that the second lifting frame 31 needs to descend will also be smaller. At this time, the number of circles rotated by the third threaded rod 312 is also smaller, so the angle at which the encoder 314 is driven to rotate by the third threaded rod 312 is also smaller. The larger the rotation angle of the encoder 314, the faster the rotation speed of the first motor 122 is controlled, and the smaller the angle, the slower the rotation speed of the first motor 122 is controlled. When the plate is thicker, the first motor 122 can be decelerated, thereby slowing down the movement speed of the saw blade 2, so that the saw blade 2 can cut thicker plates more stably.

[0044] like Figures 1 to 4 As shown, a worm gear 313 is fixed to the top of the third threaded rod 312, a rotating shaft of the encoder 314 is fixedly connected to the top of the worm gear 313, a worm 315 is fixed to the outer side of the rotating rod 316 near the worm gear 313, and the worm 315 is meshedly connected to the worm gear 313;

[0045] When the pressing plate 3 fixes the metal sheet, the turntable of the rotating rod 316 is shaken, and the turntable drives the rotating rod 316 to rotate, and the rotating rod 316 drives the two worms 315 to rotate. At this time, the worm 315 drives the worm wheel 313 to rotate, and the worm wheel 313 drives the third threaded rod 312 to rotate, which can drive the second lifting frame 31 to descend and make the pressing plate 3 press down the metal sheet. At the same time, the worm 315 and the worm wheel 313 have a self-locking feature, which can prevent the pressing plate 3 from moving during the cutting process.

[0046] like Figures 1 to 6 As shown, a connecting cylinder 23 is fixed to the bottom end of the moving block 123, and a lifting rod 221 is slidably connected to the interior of the connecting cylinder 23. The bottom end of the lifting rod 221 is fixed to the connecting block 22, which is fixed to one side of the second motor 21. The rotating shaft of the second motor 21 passes through the interior of the connecting block 22. A second threaded rod 234 is rotatably connected to the interior of the connecting cylinder 23, and the bottom end of the second threaded rod 234 is threadedly connected to the lifting rod 221.

[0047] During the use of the saw blade 2, the metal plate will be cut by friction, which will cause the saw blade 2 to wear out while cutting. The wear will cause the outer diameter of the saw blade 2 to become smaller. At this time, the saw blade 2 will not be able to completely cut the metal plate if it maintains the same height. Therefore, every time the saw blade 2 completes a cut, the second threaded rod 234 will rotate a specific number of circles. At this time, the second threaded rod 234 will drive the lifting rod 221 to extend downward from the inside of the connecting tube 23 a specific distance, so that the distance lost on the outside of the saw blade 2 is compensated by the downward movement of the lifting rod 221, which can make the cutting more stable.

[0048] like Figures 1 to 6 As shown, the top end of the second threaded rod 234 is connected to the connecting gear 231 through a ratchet structure, and one side of the connecting gear 231 is meshed with a rack 232. One end of the rack 232 extends from the inside of the connecting cylinder 23 to the outside. A top plate 125 is fixed to the side of the bottom end of the connecting shell 121 near the first motor 122;

[0049] When the rack 232 extends into the connecting tube 23, the connecting gear 231 is connected to the ratchet teeth of the second threaded rod 234. When the rack 232 extends from the connecting tube 23, the connecting gear 231 is not connected to the ratchet teeth of the second threaded rod 234.

[0050] After the first motor 122 drives the saw blade 2 to complete cutting, the first motor 122 rotates in the opposite direction to drive the saw blade 2 to reset. At this time, the connecting tube 23 moves with the moving block 123, and the top plate 125 will push the rack 232 when the connecting tube 23 is reset. At this time, the rack 232 will be pushed into the interior of the connecting tube 23, and the rack 232 drives the connecting gear 231 to rotate, and the connecting gear 231 drives the second threaded rod 234 to rotate. In this direction, the ratchet teeth of the connecting gear 231 and the second threaded rod 234 are connected. At this time, the second threaded rod 234 can drive the lifting rod 221 to extend a distance from the inside of the connecting tube 23, so that the height of the saw blade 2 can be automatically adjusted after each cutting is completed.

[0051] like Figures 1 to 6 As shown, a first spring 233 is fixed to one end of the rack 232 placed inside the connecting cylinder 23, and the other end of the first spring 233 is fixedly connected to the connecting cylinder 23;

[0052] When the saw blade 2 is cutting, the connecting tube 23 will move and separate from the top plate 125. At this time, the first spring 233 will push the rack 232 to extend from the inside of the connecting tube 23, and the connecting gear 231 rotating in this direction and the ratchet teeth of the second threaded rod 234 are not connected, so that the first spring 233 can drive the rack 232 to reset without affecting the height of the lifting rod 221.

[0053] like Figures 1 to 8 As shown, a connecting disk 24 is fixed to the end of the rotating shaft of the second motor 21. A plurality of threaded columns 242 are rotatably connected to the interior of the connecting disk 24. A fixed disk 241 is provided on the side of the connecting disk 24 away from the connecting block 22. The threaded columns 242 can be threadedly connected to the interior of the fixed disk 241. The saw blade 2 is clamped between the connecting disk 24 and the fixed disk 241. A rotating wheel 223 is provided below the connecting block 22.

[0054] When the connecting block 22 is lowered to a preset height, the plurality of threaded posts 242 are driven to rotate by the rotating wheel 223, thereby separating the fixing plate 241 from the threaded posts 242;

[0055] After the saw blade 2 has been used for a long time, its outer diameter will be consumed to a size that cannot be used any more. At this time, the saw blade 2 needs to be replaced. When the height that needs to be replaced is reached, the wheel 223 rotates to drive multiple threaded columns 242 to rotate. At this time, the threaded columns 242 are separated from the fixed disk 241 after rotation. Then the fixed disk 241 can be removed, and the saw blade 2 can be removed from one end of the connecting disk 24. Then, a new saw blade 2 is replaced at one end of the connecting disk 24, and the threaded column 242 is rotated to re-fix the threaded column 242 and the fixed disk 241, so that the saw blade 2 can be replaced in time.

[0056] like Figures 1 to 11As shown, a docking gear 243 is fixed to the end of the threaded column 242 near the connecting block 22, and the outer parts of the multiple docking gears 243 are meshedly connected with a gear ring 244. The upper part of the rotating wheel 223 is meshedly connected with a transmission gear 224, and an output gear 225 is fixed to the end of the transmission gear 224 near the gear ring 244. The output gear 225 can be meshed and connected with the outer side of the gear ring 244. A bracket 13 is fixed to the side of the processing table 1 away from the first motor 122. A docking plate 131 is fixed to the top of the bracket 13. A tooth plate 132 is fixed to the inside of the docking plate 131. The rotating wheel 223 can be meshed and connected with the tooth plate 132.

[0057] After the rotating wheel 223 descends to a preset height, the rotating wheel 223 moves to the side away from the first motor 122 and engages with the toothed plate 132 inside the docking plate 131. At this time, the rotating wheel 223 drives the transmission gear 224 to rotate, and the transmission gear 224 drives the output gear 225 to rotate, and the output gear 225 drives the gear ring 244 to rotate, which can automatically separate the threaded column 242 from the fixed disk 241.

[0058] like Figures 1 to 9 As shown, the connecting block 22 is internally movably connected to a first lifting frame 222 , and the first lifting frame 222 is rotationally connected to a transmission gear 224 and a rotating wheel 223 ;

[0059] In the initial state, the output gear 225 is separated from the gear ring 244. When the rotating wheel 223 contacts the gear plate 132, the output gear 225 and the gear ring 244 are meshed and connected.

[0060] When the rotating wheel 223 contacts the tooth plate 132, it will be lifted up by the tooth plate 132. At this time, the rotating wheel 223 will drive the transmission gear 224 and the output gear 225 to rise through the first lifting frame 222, so that the output gear 225 can be engaged with the gear ring 244. During normal cutting, the output gear 225 and the gear ring 244 are separated, which will not affect the normal rotation of the saw blade 2.

[0061] like Figures 1 to 10 As shown, push racks 25 are slidably connected to both sides of the connecting block 22, and a slide post 251 is fixed to one side of the push rack 25. A guide groove 226 is formed at the top of the first lifting frame 222, and the slide post 251 is slidably connected to the inside of the guide groove 226. A third motor 235 is installed at the top of the interior of the connecting cylinder 23, and the end of the rotating shaft of the third motor 235 is fixedly connected to the second threaded rod 234.

[0062] When the saw blade 2 is disassembled, the saw blade 2 will be driven to rotate, so the saw blade 2 needs to be positioned during disassembly. When the rotating wheel 223 is pushed up by the tooth plate 132, it drives the first lifting frame 222 to rise. At this time, the first lifting frame 222 drives the sliding column 251 to slide through the guide groove 226. When the sliding column 251 slides, it drives the pushing frame 25 to extend forward. At this time, the pushing frame 25 can keep the saw blade 2 stable during replacement. After the saw blade 2 is replaced, the third motor 235 automatically drives the second threaded rod 234 to rotate in the opposite direction to reset the lifting rod 221 to the inside of the connecting tube 23.

[0063] like Figures 1 to 10 As shown, a telescopic column 252 is inserted into the push frame 25, and a push plate 254 is fixed to one end of the telescopic column 252 away from the push frame 25. A second spring 253 is sleeved on the outside of the telescopic column 252, and one end of the second spring 253 is fixedly connected to the push plate 254, and the other end of the second spring 253 is fixedly connected to the push frame 25;

[0064] During the process of removing the saw blade 2, it will gradually move away from the push frame 25. Therefore, a push plate 254 is set at the end of the push frame 25. The second spring 253 pushes the push plate 254 to press it against the surface of the saw blade 2, so that the saw blade 2 can continue to remain in close contact with the push plate 254, thereby keeping the saw blade 2 stable during removal. At the same time, the second spring 253 pushes the push plate 254 to push the saw blade 2 down from one side of the connecting disk 24, making it easier to remove the saw blade 2.

[0065] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal sheet cutting device, characterized in that: The present invention comprises a processing table, wherein first support plates are fixed on both sides of the top of the processing table, support frames are fixed on both sides of the processing table, a connecting shell is fixed between the support frames, a first motor is installed on one side of the connecting shell, a first threaded rod is rotatably connected to the inside of the connecting shell, a moving block is slidably connected to the inside of the connecting shell, the moving block is threadedly connected to the first threaded rod, a second motor is arranged below the moving block, a saw blade is installed on the end of the rotating shaft of the second motor, a gap larger than the thickness of the saw blade is provided between the two first support plates, and the saw blade is located above the middle of the gap; A second support plate is fixed on both sides of the top of the connecting shell, the top of the second support plate is rotatably connected to a third threaded rod, the external thread of the third threaded rod is connected to a second lifting frame, and a pressing plate is fixed on both sides of the bottom of the second lifting frame, an encoder is installed on the top of one of the second support plates, the rotating shaft of the encoder is connected to the third threaded rod, and one side of the top of the second support plate is rotatably connected to a rotating rod; Among them, when the rotating rod rotates, it can drive the third threaded rod to rotate and adjust the height of the second lifting frame. The encoder records the current rotation angle as the third threaded rod rotates. When the thickness of the plate is larger, the distance the second lifting frame needs to descend will also be smaller. At this time, the number of turns of the third threaded rod is also smaller. Therefore, the angle at which the encoder is driven to rotate by the third threaded rod is also smaller. The larger the encoder rotation angle, the faster the first motor rotates, and the smaller the angle, the slower the first motor rotates. When the plate is thicker, the first motor is decelerated, thereby slowing down the movement speed of the saw blade, so that the saw blade can cut thicker plates more stably. The rotating rod drives the two worms to rotate. At this time, the worm drives the worm wheel to rotate, and the worm wheel drives the third threaded rod to rotate.

2. The metal sheet cutting device according to claim 1, characterized in that: A worm wheel is fixed to the top of the third threaded rod, the rotating shaft of the encoder is fixedly connected to the top of the worm wheel, a worm is fixed on the outer side of the rotating rod near the worm wheel, and the worm is meshed with the worm wheel.

3. The metal sheet cutting device according to claim 1, characterized in that: A connecting cylinder is fixed to the bottom end of the moving block, and a lifting rod is slidably connected to the inside of the connecting cylinder. A connecting block is fixed to the bottom end of the lifting rod, and the connecting block is fixed to one side of the second motor. The rotating shaft of the second motor passes through the inside of the connecting block. The inside of the connecting cylinder is rotatably connected to the second threaded rod, and the bottom end of the second threaded rod is threadedly connected to the lifting rod.

4. The metal sheet cutting device according to claim 3, characterized in that: The top end of the second threaded rod is connected to a connecting gear through a ratchet structure, one side of the connecting gear is meshed with a rack, one end of the rack extends from the inside to the outside of the connecting cylinder, and a top plate is fixed to the bottom end of the connecting shell near the first motor; Among them, when the rack extends into the connecting cylinder, the connecting gear is connected to the ratchet teeth of the second threaded rod, and when the rack extends out of the connecting cylinder, the connecting gear is not connected to the ratchet teeth of the second threaded rod.

5. The metal sheet cutting device according to claim 4, characterized in that: One end of the rack disposed inside the connecting cylinder is fixed with a first spring, and the other end of the first spring is fixedly connected to the connecting cylinder.

6. The metal sheet cutting device according to claim 3, characterized in that: A connecting disc is fixed to the end of the rotating shaft of the second motor, and a plurality of threaded columns are rotatably connected inside the connecting disc. A fixed disc is provided on the side of the connecting disc away from the connecting block, and the threaded columns can be threadedly connected to the inside of the fixed disc. The saw blade is clamped between the connecting disc and the fixed disc, and a rotating wheel is provided below the connecting block. When the connecting block descends to a preset height, the rotating wheel drives the multiple threaded columns to rotate, separating the fixing plate from the threaded columns.

7. The metal sheet cutting device according to claim 6, characterized in that: A docking gear is fixed to the end of the threaded column near the connecting block, and the outside of the multiple docking gears is meshed and connected with a gear ring. A transmission gear is meshed and connected to the top of the rotating wheel. An output gear is fixed to the end of the transmission gear near the gear ring, and the output gear can be meshed and connected with the outside of the gear ring. A bracket is fixed to the side of the processing table away from the first motor, and a docking plate is fixed to the top of the bracket. A tooth plate is fixed to the inside of the docking plate, and the rotating wheel can be meshed and connected with the tooth plate.

8. The metal sheet cutting device according to claim 7, characterized in that: The connecting block is internally movably connected to a first lifting frame, and the first lifting frame is rotationally connected to the transmission gear and the rotating wheel; In the initial state, the output gear is separated from the gear ring. When the runner contacts the gear plate, the output gear and the gear ring are meshed and connected.

9. The metal sheet cutting device according to claim 8, characterized in that: Both sides of the connecting block are slidably connected to a push frame, one side of the push frame is fixed with a sliding column, the top of the first lifting frame is provided with a guide groove, the sliding column is slidably connected to the inside of the guide groove, and the top of the connecting tube is installed with a third motor, and the end of the rotating shaft of the third motor is fixedly connected to the second threaded rod.

10. The metal sheet cutting device according to claim 9, characterized in that: A telescopic column is inserted into the push frame, and a push plate is fixed to one end of the telescopic column away from the push frame. A second spring is sleeved on the outside of the telescopic column, one end of the second spring is fixedly connected to the push plate, and the other end of the second spring is fixedly connected to the push frame.

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